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How do fish take in oxygen from the enviroment?

The route of respiration for aquatic animals is via the gills. Oxygen absorption takes place as water, drawn in through the mouth is pushed out through the gill slits so flow is unidirectional (unlike mammal...
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Answered by Sarah D. • Biology tutor
5880 Views

Name the order of taxon classifications starting with domain and a key feature of each of the domains.

Domain-> Kingdom-> Phylum-> Class-> Order-> Family-> Genus-> Species Bacteria- No membrane-bound organelles Archaea- A cell wall lacking peptidoglycans Eukarya- Cells with a nucleus
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Answered by Bethan R. • Biology tutor
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What is the role of neurotransmitters at synpatic junctions?

Firstly, it is important to understand what a synaptic junction is and its purpose. A synaptic junction is a type of gap junction between the pre-synaptic and post-synaptic membranes of two neurones. Neurotr...
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Answered by Karin D. • Biology tutor
3012 Views

Outline the process of DNA replication.

For organisms to grow and repair cells are constantly replicating, and therefore the DNA within cells is also constantly replicating. The process begins with the enzyme DNA helicase breaking the hydrogen bon...
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Answered by Leo H. • Biology tutor
15737 Views

Describe the impulse process in a simple reflex action

Sensory neurone detects a stimuli via sensory receptors e.g. a hot pan This sends an impulse up the sensory neuron to the brain or spinal column (together known as the central nervous system or CNS) Here te ...
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Answered by Rory P. • Biology tutor
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